In a major setback to the Congress, P Kartik Reddy, son of former Home Minister Sabitha Indra Reddy has resigned from the party on Thursday. It is learned that Kartik Reddy has announced the same following the denial of a ticket from Rajendranagar constituency. As part of Mahakutami, the same ticket has been offered to TDP candidate. TDP has selected Ganesh Gupta as its candidate on Wednesday night. It is said that if Kartik Reddy is not offered B-Form ticket, it will be assumed that his resignation has been accepted.